package com.sdx.console.contract.backstage.Utils;

import com.sdx.service.ConfigService;
import org.apache.commons.lang3.StringUtils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @ClassName Utils
 * @Description: 常用工具
 * @author: tanbaocai
 * @date: 2018/7/30 14:27
 */
public class Utils {
    public static Date[] parseQueryTime(String queryStr) {
        Date[] result = null;
        if (!StringUtils.isEmpty(queryStr)) {
            String[] timePairs = queryStr.split(" ~ ");
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            String startStr = timePairs[0] + " 00:00:00";
            result =new Date[timePairs.length];
            try {
                result[0] = df.parse(startStr);
            } catch (ParseException e) {
                e.printStackTrace();
            }
            if (result.length == 2) {
                String endStr = timePairs[1] + " 23:59:59";
                try {
                    result[1] = df.parse(endStr);
                } catch (ParseException e) {
                    e.printStackTrace();
                }
            }
        }
        return result;
    }
    /**
     * 生成指定长度的随机数字，第一位不能为0
     * @param length
     * @return
     */
    public static int getRandomIntByLength(int length) {
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        int result = 0;
        for (int i = 0; i < length; i++) {
            if (i==0) {
                while(result==0) {
                    result = random.nextInt(10);
                }
            } else {
                result = result*10+random.nextInt(10);
            }
        }
        return result;
    }
    /**
     * 获取一定长度的随机字符串
     * @param length 指定字符串长度
     * @return 一定长度的字符串
     */
    public static String getRandomStringByLength(int length) {
        String base = "abcdefghijklmnopqrstuvwxyz0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(base.length());
            sb.append(base.charAt(number));
        }
        return sb.toString();
    }

    public static String imageUrl(String imagePath) {
        if (StringUtils.isEmpty(imagePath)) {
            return null;
        } else {
            if (imagePath.toLowerCase().startsWith("http")) {
                return imagePath;
            } else {
                return ConfigService.fileUrl + imagePath;
            }
        }
    }

    /**
     * 字符串转list
     * @param ids
     * @param separator
     * @return
     */
    public static List<String> strToList(String ids,String separator) {
        if (ids.endsWith(separator)) {
            ids = StringUtils.substringBeforeLast(ids, separator);
        }
        List<String> idList = new ArrayList<String>();
        Collections.addAll(idList,ids.split(separator));
        return idList;
    }

    public static String uuid() {
        UUID uuid = UUID.randomUUID();
        String randomUUIDString = uuid.toString().replaceAll("-","");
        return randomUUIDString;
    }

    public static byte[] input2byte(InputStream inStream)throws IOException {
        ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
        byte[] buff = new byte[100];
        int rc = 0;
        while ((rc = inStream.read(buff, 0, 100)) > 0) {
            swapStream.write(buff, 0, rc);
        }
        byte[] in2b = swapStream.toByteArray();
        return in2b;
    }
}
